runtime: use UMTX_OP_WAIT_UINT on FreeBSD
UMTX_OP_WAIT expects that the address points to a uintptr, but
the code in lock_futex.c uses a uint32. UMTX_OP_WAIT_UINT is
just like UMTX_OP_WAIT, but the address points to a uint32.
This almost certainly makes no difference on a little-endian
system, but since the kernel supports it we should do the
right thing. And, who knows, maybe it matters.
R=golang-dev, bradfitz, r, ality
CC=golang-dev
https://golang.org/cl/8699043
diff --git a/src/pkg/runtime/defs_freebsd_amd64.h b/src/pkg/runtime/defs_freebsd_amd64.h
index 6348c04..56d849b 100644
--- a/src/pkg/runtime/defs_freebsd_amd64.h
+++ b/src/pkg/runtime/defs_freebsd_amd64.h
@@ -18,8 +18,8 @@
SA_RESTART = 0x2,
SA_ONSTACK = 0x1,
- UMTX_OP_WAIT = 0x2,
- UMTX_OP_WAKE = 0x3,
+ UMTX_OP_WAIT_UINT = 0xb,
+ UMTX_OP_WAKE = 0x3,
EINTR = 0x4,
